Electrical connecter



Sept. 4, 1928.

- 5. COHEN ELECTRICAL CONNECTER Filed July 31. 1922 2 Sheets-She et 1 P920a 60 20a '3 I NVEN TOR.

2& ATTORMJJ.

Sept. 4, 1928. I 1,683,066

s. COHEN ELECTRICAL CONNECTER Filed July 31, 1922 2 Sheets-Sheet .2

I NV EN'I'OR.

MM BY M (5m k ATTORNEY.

Patented Sept. 4, 1928.

UNITED STATES PATENT OFFICE.

.. SAMUEL COHEN, OF BROOKLYN, NEVT YORK, ASQIG-HOR 'IO GRACE A. BARRON,OF NEW YORK,

ELECTRICAL Application filed July 31,

connectand yet conducbinding My invention relates to electrical ers foretllecting easily detachable lirm electrical connections between tors,or between conductors and posts, or similar devices.

My invention resides in electrical connect ers having the features ofstructure, ar- ;n1gement and combination hereinafter described andclaimed.

For an illustration of some of the many terms my invention may take,reference is to be had to the accompanyii'ig drawings, in which:

1 is a cross sectional view, partly in plan, of structure embodying myinvention.

Fig. 2 is an elevational view out structure of the character illustratedin Fig. 1 in combination with a binding post.

Fig. 3 is a cross sectional view on the line 33 of Fig. 1.

Fig. l is a cross sectional view, partly in plan, of a modifiedstructure.

Fi 5 is a. sectional View on the line oi B 1g. 1. Fig. (3 1s aperspective view of a portion of t e structure shown in Fig. 4:.

Fig. 7 1s a plan view or a triple connecter structure.

Fig. 8 1s a sectional view on the line 8 8 F F o 7 0. 1

F 9 is a cross sectional view of a similar structure provided with amodified form of gripping connecters.

Figs. 10 and 11 are sectional views, partly in elevation, of combinedbinding post and detachable connecter.

Figs. 12 and 13 are sectional views, partly in elevation, of modifiedforms of combined binding post and detachable connector.

Referring to Figs. 1, 2 and 3, 1 is a stem having a bore 2 adapted toreceive the conductor 3, with which electrical connection is to be made.Stem 1 is provided with a tapering head 4 having the pockets or sockets5 opening into the bore 2 and each containing a movable gripping member,as a hall 6. The sleeve 7 has at its one end the flange 8, within whichis disposed the washer or collar 9; at its other end the sleeve 7 hasthe flange 10, having an opening for the conductor 3 registering withthe bore 2. Dis posed within the sleeve 7 and surrounding the stem 1 isthe helical spring 11 abutting CONNECTER.

1922. Serial 1'30. 578,540.

at one end against the head 1 and at the other end against the washer 9,the spring being under compression and tending to force the sleeve 7toward the right, as viewed in Fig. 1. The sleeve 7, when forced to theright by the spring 11, causes its tapered portion 12 to thrust inwardlyupon the balls or gripping members 6, causing them to firmly grip andlock the conductor 3 and effect good electrical connection between theconductor 3 and the stem 1. The conductor 3 may be released by movingthe sleeve 7 toward the left, whereupon pressure upon the balls 6 isreleased and the conductor 3 may readily be withdrawn.

An extension member 13, integral with or secured to the stem 1, hasprovided thereon any suitable formation for co-acting with a bindingpost or other structure. In the example illustrated, the extension 13 isformed at itsend into a ring orfeye 14 which, as indicated in Fig. 2, ispassed over the stud or screw 15 of a binding post structure. Upon thestud 15 is threaded the nut member 16. which clamps the eye 14; to thebinding post block 17 resting upon the washer or binding post member 18.The stud or screw 15 is adapted to extend through any suitable supportor panel, as 19, and is clamped thereto, as in the case when the member1.7 or members 17 and 18 are threaded upon the stud 15.

Referring to Figs. 4, 5 and G, a generally similar structure is shown,the extension member 13 with its eye 141- in this case being integralwith or attached. to the stem 20 having the bore 21 and the flange 22,the latter and the stem 20 having the transverse slot 28. Movablelongitudinally in the bore 21 is the second stem 24 having the bore 2for receiving the conductor 3, with which a connection is to be made.The stem 24; has the head 25 having the transverse slot 26, in which isdisposed the gripping member 27 having an edged notch 28 adapted toengage the conductor 3 to grip and hold it. The sleeve 7 is in this casefixed, as by securing its flange 8 to the aforesaid flange 22.Surrounding the stem 24 is the helical spring 11 under compressionbetween the head 25 and the flange 22, therefore tending to press thehead 25 toward the left, Fig. 4, thereby forcing the gripping member 27inwardly to engage theconductor 3. Extendingtransverselythrough thestem24 and through the slot 23 in the stem is the'pin 29, which guides thestem 24 in the bore 21 and holds the members 24 and 20 in assembledrelation. The pin 29 serves also as a handle or grip for transmittinglongitudinal motion tothevbinding post block 31.

stem 24, pressing the pin 29 towardQthe right, Fig. 4, loosening thegripping member 27 and allowing withdrawal of the conducthreadedextensions 1 threaded into the block or member 30, though they may beintegral therewith or otherwise attached thereto. If suitable ordesirable, the member 30 may be an element of a binding post secured toan fixed or movable support.

By the arrangement shown, a plurality of conductors 3 may be broughtinto electrical.

- communication with each other through scribed in connection with Fig.1.

their detachable gripping connecters and the member 30, each conductor 3bein separately and independently removable or do tachable by operatingthe sleeve 7, 'de

In F ig. 9 an arrangement similar tothat indicated 1n:Figs. 7 and 8 isshown, the type of gripping connecter belng, however,

.that illustrated in Fig. 1, in this case the stems 20 having threadedextensions 2O threaded into or otherwise attached or con nected to themember 30.

Referring to Fig. 10, there shown a detachable connecting and grippingmember of the character illustrated in Fig. 1 forming a part of abinding post structure. The stem 1 has an extension 1 threaded into theblock or head 31 integral with the binding post stud 32, upon which isthreadedthe nut 33 for clamping the conductor 34 and also for holdingthe block 31 in fixed posi-.

tion upon the support 19. v

In Fig. 1]. is shown a similar structure utilizing, however, the form ofdetachable gripping connecter shown in Fig. 4. In this case the stem 20has the threaded extension 20threaded intothe block 31.

As to both Figs. 10 and 11, it will be understood that the extensionsland 20 may be detachable from the blocks 31, as described, or the stems1 and 20 may be integral with the block 31 and stud 32.

Referring to Fig. 12, there is shown a detachable gripping. member ofthe character illustrated in Fig. '1 forming a part i of binding poststructure. In this case the stem 1 has integral therewith the block 31of a binding post structure. In this case also the block 31-is threadedto. receive thebinding post screw or bolt 32. A

;In Fig. 13 is illustrated a similar structure involving, however, thetype of detachable gripping connecter shown in F 4. I In this case thestem 20 is provided with the lVhatI claim is j 1. An electricalconnecter comprising in combination a hollow stem, a connectin member onone endof said stem, a hea having the shape of a frustrum of a coneformed onthe, opposite end of said stem, a

cylindrical casing enclosing said stem,

s rin means inter osed between one end b Wall of said casin and the headof said stem, said cylindrical casing having the walls thereof adjacentthe opposite end of said cylindrical casing shaped to correspond withthe shape of the head of said stem, a transverse slotin said head, and agripping member positioned in said slot, said stem extending oppositethe end on which said head is formed and having a guide pin positionedtherein, ac'onducting memberextend. ing from said cylindrical casing andhaving slots therein through which said guide pin is arranged to move,said guide pin provid ing means for allowingrelative movement betweensaid c lindrical casing and said hollow stem for orcing said grippingmember against a conductor inserted in said hollow stem. i i

2. An electrical connectercomprising in combination a hollow stem, aconnecting member formed on one end of said stem, a head having theshape of a frustrum of a cone formed on the opposite end of said stem, acylindrical casing enclosing said stem, spring means lnterposed betweenone end wall of said casing and the head of said stem, said cylindricalcasing having the walls thereof adjacent the opposite end of saidcylindrical casing shaped to correspond with the shape of the head ofsaid stem, a

transverse slot in said head, and a gripping member positioned insaidslot, a conducting member projecting from said first mentioned endofsaid cylindrical casing, a guide'pin; passing through one end of saidhollowstem and through slots formed in said conductmg member, said uidepin bein in a plane at righta'ngles to t e plane of saidtransverse-slot, said guide pin providing means forallowing relativemovement. between said head and'said cylindrical casin for forcing saidgrip ing member into positioned said hollow stem for esta lishingelectrical connection with an electrical sorted therein.

In testimony whereof I have hereunto conductor in-

